| Country | Action | Action Date | Effective Date |
|---|
| ALGERIA | Bound | | 05/07/1972 |
| ARMENIA | Bound | | 25/12/1991 |
| AUSTRIA | Bound | | 01/01/1909 |
| AZERBAIJAN | Bound | | 25/12/1995 |
| BELGIUM | Signature | 15/04/1891 | |
| BELGIUM | Ratification | 15/06/1892 | |
| BRAZIL | Signature | 15/04/1891 | |
| CUBA | Accession | 17/11/1904 | |
| FRANCE | Signature | 15/04/1891 | |
| FRANCE | Ratification | 15/06/1892 | |
| GUATEMALA | Signature | 15/04/1891 | |
| ITALY | Signature | 15/04/1891 | |
| NETHERLANDS THE | Signature | 15/04/1891 | |
| NORWAY | Signature | 15/04/1891 | |
| NORWAY | Ratification | 15/06/1892 | |
| PORTUGAL | Signature | 15/04/1891 | |
| SPAIN | Signature | 15/04/1891 | |
| SPAIN | Ratification | 15/06/1892 | |
| SWEDEN | Signature | 15/04/1891 | |
| SWEDEN | Ratification | 15/06/1892 | |
| SWITZERLAND | Signature | 15/04/1891 | |
| SWITZERLAND | Ratification | 15/06/1892 | |
| TUNIS | Signature | 15/04/1891 | |
| TUNIS | Ratification | 15/06/1892 | |
| UNITED KINGDOM | Signature | 15/04/1891 | |
| UNITED KINGDOM | Ratification | 15/06/1892 | |
| UNITED STATES OF AMERICA | Signature | 15/04/1891 | |
| UNITED STATES OF AMERICA | Ratification | 15/06/1892 | |